Drinking Water

Recycling of aluminium-bearing precipitation and flocculation sludges from water treatment plants

A process has been tested for the recovery of the aluminium oxide content of aluminium-bearing waterworks sludge produced by drinking water treatment. This investigation has also produced a solution for the recycling of AlCl3, which can be used as a flocculating agent in waste water treatment or, in a modified form, for the recovery of polyaluminium chloride sulphates for use in drinking water treatment.

 

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Source: German National Library of Science and Technology Hannover (TIB)